Alloy powder injection molding, degreasing and sintering integrated device

Abstract

The utility model discloses an alloy powder injection molding, degreasing and sintering integrated device, and relates to the technical field of degreasing and sintering integrated devices. The alloy powder injection molding, degreasing and sintering integrated device comprises a base arranged in an integrated degreasing and sintering furnace and further comprises a cover cylinder connected with the base. Workpieces to be degreased and sintered are placed in a layered mode through the layered placing plates, pressure difference is formed in the closed cavity between the cover cylinder and the base through cooperation of the air inlet pipe and the air exhaust pipe, air is promoted to flow in a one-way mode, protective gas is dispersed in the closed cavity through the arranged dispersing assembly, and therefore the protective gas is dispersed in the closed cavity. The protective gas and the evaporated gaseous binder are mixed to generate cyclone, then the evaporated binder is taken out of the closed cavity through the exhaust pipe, the gaseous binder is prevented from being deposited on a workpiece, the degreasing effect is improved, and favorable guarantee is provided for subsequent sintering of the workpiece by the integrated degreasing sintering furnace.

Description

Technical Field

[0001] The utility model belongs to the technical field of degreasing and sintering integrated devices, in particular to an alloy powder injection molding degreasing and sintering integrated device. Background Art

[0002] Degreasing and sintering are the most critical steps in the metal forming process. Degreasing is the process of removing the binder contained in the blank before sintering. The degreasing process must ensure that the binder is gradually discharged from different parts of the blank along the tiny channels between the particles without damaging the high strength of the blank. Sintering can shrink and densify the porous degreased blank into a product with certain organization and performance.

[0003] At present, during the degreasing process of the metal forming vacuum degreasing and sintering furnace, the heating body is heated, the vacuum pump group continuously extracts air through the degreasing pipeline, and the charging pipeline is continuously filled with protective gas, so that a pressure difference is formed inside and outside the material box, which promotes the unidirectional flow of gas. As the degreasing temperature rises, the binder is converted into gaseous state and passes through the pores to reach the surface of the parts through diffusion and penetration. At this time, the key issue is whether the binder can be evenly taken away to ensure that the binder will not be deposited on the parts again. For this reason, an integrated device for alloy powder injection molding degreasing and sintering is proposed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an alloy powder injection molding degreasing and sintering integrated device which can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is: an integrated device for degreasing and sintering of alloy powder injection molding, including a base arranged in an integrated degreasing and sintering furnace, and also including: a cover cylinder connected to the base, for forming a closed chamber between the base and the cover cylinder; side plates symmetrically arranged on the base, and multiple layers of placement plates are arranged on the side plates for placing workpieces; an exhaust pipe, arranged on the top of the cover cylinder; an air inlet pipe, arranged on the outer periphery of the cover cylinder; a dispersion component, arranged in the middle of the placement plate, for dispersing the gas entering the cover cylinder.

[0006] Preferably, a clamping groove is provided on the surface of the base, and one end of the cover tube corresponds to the clamping groove.

[0007] Preferably, a slot is provided on the inner side of the side plate, and plug plates are fixedly connected to both sides of the placement plate, and the plug plates correspond to the slot.

[0008] Furthermore, a groove is provided on the outer side of the side plate, and an opening is provided in the groove of the side plate, the opening penetrates the side plate, and the groove corresponds to the air intake pipe.

[0009] Preferably, the dispersion component comprises an inclined blade group circumferentially fixedly connected to a connecting column, a vent hole is opened in the middle of the placement plate, the connecting column is fixedly connected to the placement plate, and the inclined blade group is located above the vent hole.

[0010] Furthermore, the placement plate is fixedly connected to a limiting cover at the vent hole.

[0011] Preferably, the dispersion component comprises a flanged sleeve fixedly connected to the connection block, a plurality of spiral sheets are fixedly connected to the circumference of the outer wall of the flanged sleeve, and the connection block is located in the vent hole.

[0012] Furthermore, a connecting rod is fixedly connected to the bottom of the placement plate, one end of the connecting rod extends toward the vent hole, and the connecting block is detachably connected to the connecting rod by bolts.

[0013] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: the utility model arranges layered placement plates to place the workpieces to be degreased and sintered in layers, and forms a pressure difference in the closed chamber between the cover tube and the base through the cooperation of the air inlet pipe and the exhaust pipe, thereby promoting unidirectional flow of gas, and then the protective gas is dispersed in the closed chamber through the arranged dispersion component, so that the protective gas is mixed with the evaporated gaseous binder to generate a cyclone, and then the evaporated binder is brought out of the closed chamber through the exhaust pipe, so as to avoid the gaseous binder from being deposited on the workpiece, thereby improving the degreasing effect and providing favorable guarantee for the subsequent sintering of the workpiece by the integrated degreasing and sintering furnace.

[0014] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In the attached picture:

[0016] Figure 1 This is a schematic structural diagram of the alloy powder injection molding degreasing and sintering integrated device proposed by the utility model;

[0017] Figure 2 This is a schematic structural diagram of a placement plate of an alloy powder injection molding, degreasing and sintering integrated device proposed in the utility model;

[0018] Figure 3 This is a schematic structural diagram of a cover tube and a base of the alloy powder injection molding degreasing and sintering integrated device proposed by the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the slots and grooves of the alloy powder injection molding degreasing and sintering integrated device proposed by the utility model;

[0020] Figure 5This is a schematic structural diagram of the opening of the alloy powder injection molding degreasing and sintering integrated device proposed by the utility model;

[0021] Figure 6 It is a structural schematic diagram of the side plate of the alloy powder injection molding degreasing and sintering integrated device proposed by the utility model;

[0022] Figure 7 It is a top view of the alloy powder injection molding degreasing and sintering integrated device proposed by the utility model;

[0023] Figure 8 This is a schematic structural diagram of a flange sleeve and a spiral sheet of an alloy powder injection molding degreasing and sintering integrated device proposed by the utility model.

[0024] In the figure: 1. base; 10. clamping groove; 11. cover tube; 12. exhaust pipe; 13. air inlet pipe; 2. side panel; 21. slot; 22. placement plate; 23. plug-in plate; 24. connecting column; 25. inclined blade group; 26. limit cover; 27. groove; 28. opening; 29. ​​vent; 3. integrated degreasing and sintering furnace; 4. connecting block; 40. spiral sheet; 41. flange sleeve; 42. connecting rod; 43. bolt. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0026] Example 1: Reference Figure 1-Figure 8 The alloy powder injection molding degreasing and sintering integrated device includes a base 1 arranged in an integrated degreasing and sintering furnace 3, and also includes: a cover tube 11 connected to the base 1, for forming a closed chamber between the base 1 and the cover tube 11; a side plate 2 symmetrically arranged on the base 1, and a multi-layer placement plate 22 is arranged on the side plate 2 for placing the workpiece; an exhaust pipe 12, arranged at the top of the cover tube 11; an air intake pipe 13, arranged on the outer periphery of the cover tube 11; a dispersion component, arranged in the middle of the placement plate 22, for dispersing the gas entering the cover tube 11; a clamping groove 10 is opened on the surface of the base 1, and one end of the cover tube 11 corresponds to the clamping groove 10; a slot 21 is opened on the inner side of the side plate 2, and plug plates 23 are fixedly connected on both sides of the placement plate 22, and the plug plates 23 correspond to the slot 21; a groove 27 is opened on the outer side of the side plate 2, and an opening 28 is opened in the side plate 2 located in the groove 27, and the opening 28 passes through the side plate 2, and the groove 27 corresponds to the air intake pipe 13;

[0027] When the device is in use, the exhaust pipe in the integrated degreasing and sintering furnace 3 is connected to the exhaust pipe 12 on the cover tube 11, and the charging pipe in the integrated degreasing and sintering furnace 3 is connected to the air inlet pipe 13;

[0028] The workpieces to be degreased and sintered are placed on the placement plates 22 respectively, and the temperature is raised by the integrated degreasing and sintering furnace 3, so that the temperature in the closed chamber is raised, and the workpieces begin to be degreased;

[0029] Since the protective gas is charged into the closed chamber through the air inlet pipe 13, the protective gas is dispersed at the groove 27 of the side plate 2 when entering the closed chamber through the air inlet pipe 13, and enters the closed chamber where the placement plate 22 is located through the opening 28;

[0030] And through the setting of the dispersion component, the protective gas is dispersed in the closed chamber, so that the protective gas is mixed with the evaporated gaseous binder, and the evaporated binder is then brought out of the closed chamber through the exhaust pipe 12, avoiding the gaseous binder from being deposited on the workpiece, thereby improving the degreasing effect and providing favorable protection for the subsequent sintering of the workpiece by the integrated degreasing sintering furnace 3.

[0031] Embodiment 2:

[0032] Reference Figure 1 , Figure 4 , Figure 7 , an alloy powder injection molding degreasing and sintering integrated device, which is basically the same as Example 1, and further: the dispersion component includes an inclined blade group 25 circumferentially fixedly connected to the connecting column 24, a vent hole 29 is opened in the middle of the placement plate 22, the connecting column 24 is fixedly connected to the placement plate 22, and the inclined blade group 25 is located above the vent hole 29;

[0033] When the protective gas from the air inlet pipe 13 enters the cover tube 11, the protective gas will move upward when the exhaust pipe 12 is exhausting. Therefore, when the protective gas passes through the vent hole 29, it will be blocked by the inclined blade group 25, forming a spiral upward shape (refer to Figure 1 As shown in FIG. 1 , the gaseous adhesive can be brought together to move upward and be sucked out of the cover tube 11 by the exhaust pipe 12 .

[0034] The placement plate 22 is fixedly connected to the limiting cover 26 at the vent hole 29, and can guide the spiral rising airflow to be more stable.

[0035] Embodiment 3:

[0036] Reference Figure 8, an alloy powder injection molding degreasing and sintering integrated device, which is basically the same as Example 1, and further: the dispersion component includes a flange sleeve 41 fixedly connected to the connecting block 4, and a plurality of spiral sheets 40 are fixedly connected to the outer wall of the flange sleeve 41, and the connecting block 4 is located in the vent hole 29;

[0037] When the protective gas in the cover tube 11 moves upward, the protective gas will be blocked by the flange sleeve 41 when passing through the vent hole 29, and move upward from the outside of the flange sleeve 41. Under the influence of the spiral blade 40, the protective gas rotates upward, thereby bringing the evaporated adhesive in the workpiece out of the cover tube 11.

[0038] A connecting rod 42 is fixedly connected to the bottom of the placement plate 22, one end of the connecting rod 42 extends toward the vent hole 29, and the connecting block 4 is detachably connected to the connecting rod 42 by a bolt 43, so as to facilitate installation and replacement.

[0039] The utility model arranges layered placement plates 22 to place the workpieces to be degreased and sintered in layers, and forms a pressure difference in the closed chamber between the cover tube 11 and the base 1 through the cooperation of the air inlet pipe 13 and the air exhaust pipe 12, so as to promote unidirectional flow of gas, and then disperses the protective gas in the closed chamber through the arranged dispersion component, so that the protective gas is mixed with the evaporated gaseous binder to generate a cyclone, and then the evaporated binder is brought out of the closed chamber through the air exhaust pipe 12, so as to avoid the gaseous binder from being deposited on the workpiece, thereby improving the degreasing effect and providing favorable protection for the subsequent sintering of the workpiece by the integrated degreasing and sintering furnace 3.

[0040] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the present invention can make some changes or modifications to equivalent embodiments of equivalent changes using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. An integrated device for alloy powder injection molding, degreasing and sintering, comprising a base (1) arranged in an integrated degreasing and sintering furnace (3), characterized in that: Also includes: A cover tube (11) connected to the base (1) and used to form a closed chamber between the base (1) and the cover tube (11); A side plate (2) symmetrically arranged on the base (1), wherein a multi-layer placement plate (22) is arranged on the side plate (2) for placing workpieces; An air extraction pipe (12) is arranged on the top of the cover cylinder (11); An air intake pipe (13) is arranged on the outer periphery of the cover tube (11); A dispersion component is arranged in the middle of the placement plate (22) and is used to disperse the gas entering the cover tube (11).

2. The alloy powder injection molding degreasing and sintering integrated device according to claim 1, characterized in that: A clamping groove (10) is provided on the surface of the base (1), and one end of the cover tube (11) corresponds to the clamping groove (10).

3. The alloy powder injection molding degreasing and sintering integrated device according to claim 1, characterized in that: A slot (21) is provided on the inner side of the side plate (2), and plugging plates (23) are fixedly connected to both sides of the placement plate (22), and the plugging plates (23) correspond to the slot (21).

4. The alloy powder injection molding degreasing and sintering integrated device according to claim 3, characterized in that: A groove (27) is provided on the outer side of the side plate (2), an opening (28) is provided in the groove (27) of the side plate (2), the opening (28) penetrates the side plate (2), and the groove (27) corresponds to the air intake pipe (13).

5. The alloy powder injection molding degreasing and sintering integrated device according to claim 4, characterized in that: The dispersion component comprises an inclined blade group (25) circumferentially fixedly connected to a connecting column (24); a vent hole (29) is provided in the middle of the placement plate (22); the connecting column (24) is fixedly connected to the placement plate (22); and the inclined blade group (25) is located above the vent hole (29).

6. The alloy powder injection molding degreasing and sintering integrated device according to claim 5, characterized in that: The placement plate (22) is located at the vent hole (29) and is fixedly connected to the limiting cover (26).

7. The alloy powder injection molding degreasing and sintering integrated device according to claim 4, characterized in that: The dispersion assembly comprises a flanged sleeve (41) fixedly connected to a connection block (4), a plurality of spiral sheets (40) being fixedly connected to the circumference of an outer wall of the flanged sleeve (41), and the connection block (4) is located in the vent hole (29).

8. The alloy powder injection molding degreasing and sintering integrated device according to claim 7, characterized in that: A connecting rod (42) is fixedly connected to the bottom of the placement plate (22), one end of the connecting rod (42) extends toward the vent hole (29), and the connecting block (4) is detachably connected to the connecting rod (42) via a bolt (43).

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